repeated string items = 1;
}

// LocalSubjectAccessReview checks whether or not a user or group can perform an action in a given namespace.
// Having a namespace scoped resource makes it much easier to grant namespace scoped policy that includes permissions
// checking.
message LocalSubjectAccessReview {
  // Standard list metadata.

So basically selecting the right binary for one of the above cases is a heuristic with 2 inputs:

1. Does the particular binary variant (legacy, nft, ip6tables) even exist in $PATH?
1. In the current netns context, are there already rules defined in one of (legacy, nft) tables? If so, prefer that one.

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